You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Should have an NSFW warningOh, and that cat5 crimp, shudder:
View attachment 821019
That'll be whyFrom a qualified sparky too
I have had the same issue and lived with it for 8 years! It is inevitable that multiple ’generators' on the same side of the current transformer can't identify the difference between solar power and battery power once it's converted to ac.so when it demands power, the battery starts supplying and the charger just thinks the sun came out
I'm just about to start trying to come up with a work around
That crimp tool out the whole damn network, just plugging it into the powered down network .****! Even I can crimp a network cable and I'm a complete idiot.
The Andersen has an Advanced Solar option in beta that I'm going to investigate. Otherwise I'll take back manual control and just choose to charge at a limited rate for a few hours. But that sucks.I have had the same issue and lived with it for 8 years! It is inevitable that multiple ’generators' on the same side of the current transformer can't identify the difference between solar power and battery power once it's converted to ac.
I'm just about to start trying to come up with a work around. For me, a solution may exist by configuring a volt free contact on one of the devices. But in truth, I'm not confident in finding a complete solution as the devices are not capable of 'talking' to eachother.
Sounds spot on! Will explore the Andersen software some more to see if I can find something similar!My setup is different – Zappi, Victron inverter, Pylontech, 3kW AC-connected PV – but maybe the concepts will carry across. No big changes were needed to get the Zappi to play nicely with the battery.
In the morning the inverter software does a good job of taking all the surplus PV for the battery, keeping the export to the grid in the range 0 to 50W approx. If the car is plugged in the Zappi will be in "Eco+" mode and won't do anything while it waits for some minimum level of export, around 1.5kW.
When the battery reaches 100% the Zappi notices the export and (after some seconds) begins charging. It starts with an optimistically high current, 1 or 2 kW more than the PV is producing, so the inverter prevents any import by supplying the difference from the battery.
Now the cunning part ... the Zappi also has a target for the grid connection: its "export margin" is configured to a relatively high value, say 150W, meaning its goal is to have 150W export at all times. So while the battery is draining, the Zappi spends about 60 seconds steadily reducing the charge current to achieve that goal. Then at first the battery takes part of the PV power to top itself up, and after a minute or two we have the battery sitting at 100% and the Zappi current following the PV up and down, all the time aiming for 150W export.
In summary: no special hardware, just the normal clamps on the grid connection so the inverter and Zappi can measure the import/export. No special configuration beyond the export margin in the Zappi (A
dvanced - Supply Grid - Networ
Now the cunning part ... the Zappi also has a target for the grid connection: its "export margin" is configured to a relatively high value, say 150W, meaning its goal is to have 150W export at all times
Given the complexity and custom method your looking to achieve, and probably various modding going forward, the only way I can see you getting this to work is to make your own custom program setup.My (subjective ) view:
I upgraded my PV a few months ago (48 panels now), and added (to Tesla Charger) a Zappi at that time (assuming I'd be using its "Divert to EV when export detected")
But ... I'm not sure I want to charge my EV at 1.5kW ... as I think the losses are significant.
Thus I would prefer to divert part of my PV to EV, at a high rate, using the PowerWall as the Ebb-and-Flow, whilst attempting to get PowerWall to 100% at end-of-day.
The Zappi approach (on a good-sun day) is charge the PowerWall flat out, then charge the car flat out. The car is going to be happy with flat-out 'coz it will be perfectly happy when it max's out at 7Kw (although, in my case, I have enough PV that that will at times go well over 7kW so I'd still export at that point), but based on the rate the PowerWall charges on Off Peak (which I read as "ideal for longevity") I'm not sure that "flat out" is best for PowerWall - on a good-sun day mine will get from 5% to full by 11AM (10 kW Max I think, my peak PV is around 15kW)
My approach is, of course, a lot more complicated ... particularly as it involves forecasting whether this afternoon's sun will be good enough to actually fill the PowerWall the last few percent to 100% by sun-down ...
Given the complexity and custom method your looking to achieve, and probably various modding going forward, the only way I can see you getting this to work is to make your own custom program setup.
As with all things like this, you start small and build up, such as get the data coming in and the control going out first
Getting the Pi and Node red running, probably a 15 min job, (not hard).View attachment 821668
Sorry, forgot the pretty picture
Top one is 5AM this morning, bottom is 10AM-ish
Left shows actuals (well ... its Solcast's data for my region for what it thinks actually happened, I can use my own data for that too and see what variance I get from Solcast)
Right is its forward prediction - as the bottom one shows fine-adjusted for "next 3 hours", but rest of forward prediction seems to stay the same
target for the grid connection: its "export margin" is configured to a relatively high value, say 150W,
charge my EV at 1.5kW ... as I think the losses are significant.
as it involves forecasting whether this afternoon's sun will be good enough
with regard to this, I have little to offer...BTW, have any of the assembled company come across any generic G100 devices that might convince the DNO they don't have to worry about what I might export! I don't really get why a DNO accepts that g83 and now g98 can dependably keep export to sub 3.6kw or whatever, but not accept that the same control systems can be relied on (suitably configured) to ensure a g99 inverter can't export more than say 2kw.
90kw export in my case
The other day, when v sunny, and we were not shredding paper (weekend)...Could you potentially really export that amount of power? I don't want to export anything if can avoid it.
I'm leaning towards an off-grid with grid support configuration as a way of taking DNO out of the equation at least as far as any export. Down side is that my inverters have to be sized to handle max continuous load, but the upside is I get to pretty much do what makes most sense as far as the rest of the system design, and grid-fail backup comes as part of the system design.